\(137.\left(-23\right)+137.\left(-17\right)+40.37\\ =137.\left(-23-17\right)+40.37\\ =137.\left(-37\right)+\left(-40\right).\left(-37\right)\\ =\left(137-40\right).\left(-37\right)\\ =-37.97\\ =...\)
Lời giải:
$137(-23)+137(-17)+40.37=137[(-23)+(-17)]+40.37$
$=137(-40)+40.37=-137.40+40.37=40(37-137)=30.(-100)=-3000$